Soldering gun



F. DUN HAM SOLDERING GUN ct. 26, i948,

Filed Dec. 23, 1946 r o t u e v ..111

AttoeysI Patented Oct. 26, i948 TNT FFECE SOLDERING GUN Frank Dunham, Grand Island, Nebr., assignor of ifty per cent to John F. McCarthy, Grand Island, Nebr.

, in described which embodies in its vconstruction an electrically heated solder magazine and in which means are provided for easily and conveniently ej ecting the liquefied solder from the magazine through the soldering tip.

' A further object Iof the invention is to provide a soldering gun which is simple in construction and which may be easily manipulated.

Another object of the invention is to provide a soldering gun which may belheld and manipulated with only one hand, thereby eliminating the previously experienced inconvenience of holding the conventional soldering iron in one hand, the solder in the other.

An additional object of the invention is to provide a soldering gun which will not easily become damaged and which is otherwise well .adapted for the purpose for which it is intended.

A still further object of the invention is to provide a soldering gun which will readily lend itself -to economical manufacture.

With the abovemore important objects in view, and such other objects as may become apparent -a-s this specifica-tion proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure l is a side elevation of the invention.

Figure 2 is a top plan View thereof.

Figure 3 is a cross sectional view, taken substantially in the plane :of the line 3-3 in Figure 2, and

Figure 4 stantially in .the plane of the line 4-4 in Figure 1.

Like characters of reference are used `to designate like parts in the specication :and .throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a soldering gun designated generally by the reference Character I, the same embodying in its Iconstruction an elongated, substantially cylindrical body II provided at one end thereof with a laterally projecting handle I2. In eifect, the body II and the rassociated handle may be formed in two complement-al sections, these being secured together by a plurali-ty of suitable bolts or screws I3, whereby the assembly or disassembly of the soldering gun will be facilitated.

The remaining end of the body II is of a substantially frusto-conical configuration as indicatis a cross sectional view, taken subed at Ill, and a longitudinally extending chamber l5 is formed in the body, las will be clearly apparent from the `accompanying drawings.

A cylindrical sleeve I6 extends longitudinally from the handle end of the body H and may, if deisred, be formed integrally therewith. The sleeve is formed on the underside thereof wi'th a longitudinally extending slot Il and the purpose thereof will be hereinafter more fully described.

A :tubular solder magazine I8 extends longitudinally in the chamber I5, one end of the magazine communicating with the sleeve I6, while its remaining end terminates in .a screw threaded portion I9 which is disposed in a counter-bore 2B formed in the end portion I4 of the .body I I.

A'soldering -tip 2l is provided with an outlet pass-age 22 and with an internally threaded adaptor 23, the latter being receivable in the counter-bore and being adapted .to engage the threaded portion I9 of the magazine I8. It ywill be noted that the passage 22 of the soldering tip is, of course, in communication with the magazine, as is best shown in Figure 3.

A helical electric heating element 24 is wound around .the outer wall of the magazine i8 in `the chamber I5, the element being adapted for heating both the magazine and `the soldering tip 2|, the latter function being performed through the medium of the connecting adaptor 23. Packing of suitable heat insulating material 25 is provided in the chamber I5, 'thereby preventing -dissipation of hea-t from the element 24 to the body II.

-One end of the elemen't 24 is electrically connected to a suitable switch 2-6 mounted on the Ibody II adjacent the handle I2, the remaining end of the element and the second wire of the switch Iuniting to form a conductor 21.

The cable 2l passes outwardly through a bore 28 provided in the handle I2 and the usual attachment plug 29 is positioned at the free end :of .the cable, for obvious reasons. If desired, the switch 26 may be equipped with a trigger-like finger piece 30, as will be clearly apparent from the laccompanying drawings.

A plunger 3l is slidable in the magazine I8 and a further plunger 32 is slidably positioned in the sleeve I6. The two plungers are rigidly connected together by a push rod 33 and the plunger 32 is provided with an arcuate ringer piece 34 which extends laterally through the aforementioned slot Il. Finally, a suitable compression spring 35 is interposed between the plunger 32 and the adjacent end of the magazine i8, as will be clearly understood.

zine I8 as shown in Figure 3 and when thefsupply4 of solder in the magazine i8 has been exhausted,

the same may be replenished by simply removing the tip 2 I.

It should be understood that a plurality of soldering tips may be used in 4association with the gun, the saine being congurated in accordance with the particular requirements of the Work.

It will be also noted that the soldering gun may be held and manipulated with only one hand, by simply gripping the handle I2. The Switch 26 may be actuated by extending the fore finger into engagement With the finger piece 3G, While the solder may be ejected through the passage 22 by extending the thumb into engagement with the iingerpiece 24'.

It is believed that the advantages and use of the invention will be cle-arly understood from the foregoing disclosure and accordingly, further description thereof at this point is considered unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention 4it is to be understood' that minor changes in the details of construction, combinationand arrangement of parts may be resorted to without departing from the spirit' and scope ofy the invention as claimed.

What I claim as my invention is:

A soldering gun comprising in combination, an elongated body formed with a longitudinally extending chamber, a laterally projecting handle at one end of said body, a tubular solder magazine extending longitudinally through said chamber, a soldering tip removably positionedat the remaining` end of said body and in contact with the adjacent end of said magazine, an electric heating element positioned in said chamber and surrounding said magazine, packing of heat insulating material provided in said chamber, said tip being formedwth an outlet passage communicating with said magazine, a switch provided on said z body adjacent said handle, a current conductor piece andthe adjacent end of said magazine.

FRANK DUNI-IAM.

n REFERENCES CITED The following references are of record in the file oi this. patent:

UNITED STATES PATENTS Number Name Date 1,95TL325 Davis May 1, 1934 '2,994,795 Johnson Oct. 5, 1937 2,380,138 Abramson July 10, 1945v 

